mvc5 webapi 编写

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using System; using System.Collections.Generic; using System.Linq; using System.Net; using System.Net.Http; using System.Web.Http; using SqlSugar; using Models; using WebApplication.Dao; using System.Text;   namespace WebApplication.Controllers {     /// <summary>     /// 分类接口     /// </summary>     public class classificationController : ApiController     {         /// <summary>         /// 获取分类列表(条件查询，分页) http://192.168.2.177:1222/api/classification/GetclassificationListPage?pageIndex=1&pageSize=10&status=2&title=         /// </summary>         /// <param name="pageIndex">分页索引</param>         /// <param name="pageSize">分页大小</param>         /// <param name="status">状态：0:下线 1：上线  -1：失效,默认传入2获取所有数据</param>         /// <param name="title"></param>         /// <returns></returns>         [Route("api/classification/GetclassificationListPage")]         [HttpGet]         public string GetclassificationListPage(int pageIndex, int pageSize, int status, string title)         {             try             {                 using (var db = SugarDao.GetInstance())                 {                       var qable = db.Queryable<tb_classification>();                     var dataCountTable = db.Queryable<tb_classification>();                       if (status != 2)                     {                         qable = qable.Where(i => i.status == status);                         dataCountTable = dataCountTable.Where(i => i.status == status);                     }                     if (status == 2)                     {                         dataCountTable = dataCountTable.Where(i => i.status != status);                     }                     if (!string.IsNullOrEmpty(title))                     {                         qable = qable.Where(i => i.title.Contains(title));                         dataCountTable = dataCountTable.Where(i => i.title.Contains(title));                     }                         var data = qable.OrderBy(it => it.createtime, OrderByType.Asc).ToPageList(pageIndex, pageSize);                       var dataCount = dataCountTable.ToList().Count;                       if (data.Count > 0)                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 1, Msg = "获取数据成功", Data = data, Count = dataCount });                     }                     else                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 1, Msg = "获取数据失败", Data = data, Count = dataCount });                     }                   }             }             catch (Exception ex)             {                 return SqlSugar.JsonConverter.Serialize(new { Result = 0, Msg = "获取数据失败,原因为:" + ex.Message });             }         }           /// <summary>         /// 获取分类数据，不分页 http://192.168.2.177:1222/api/classification/GetclassificationList?status=2&title=         /// </summary>         /// <param name="status"></param>         /// <param name="title"></param>         /// <returns></returns>         [Route("api/classification/GetclassificationList")]         [HttpGet]         public string GetclassificationList(int status, string title)         {             try             {                 using (var db = SugarDao.GetInstance())                 {                     var qable = db.Queryable<tb_classification>();                     if (status != 2)                     {                         qable = qable.Where(i => i.status == status);                     }                     if (!string.IsNullOrEmpty(title))                     {                         qable = qable.Where(i => i.title.Contains(title));                     }                     var data = qable.OrderBy(it => it.createtime, OrderByType.Asc).ToList();                     var dataCount = db.Queryable<tb_classification>().Where(it => it.status != status).ToList().Count;                     if (data.Count > 0)                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 1, Msg = "获取数据成功", Data = data, Count = dataCount });                     }                     else                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 1, Msg = "获取数据失败", Data = data, Count = dataCount });                     }                   }             }             catch (Exception ex)             {                 return SqlSugar.JsonConverter.Serialize(new { Result = 0, Msg = "获取数据失败,原因为:" + ex.Message });             }         }           /// <summary>         /// 根据id得到对象 http://192.168.2.177:1222/api/classification/GetclassificationModel?id=1         /// </summary>         /// <param name="id"></param>         /// <returns></returns>         [Route("api/classification/GetclassificationModel")]         [HttpGet, HttpPost]         public string GetclassificationModel(int id)         {             try             {                 using (var db = SugarDao.GetInstance())                 {                     if (id != 0)                     {                         var classification = db.Queryable<tb_classification>().Single(it => it.id == id);                         if (classification != null)                         {                             return SqlSugar.JsonConverter.Serialize(new { Result = 1, Msg = "获取数据成功", Data = classification });                         }                         else                         {                             return SqlSugar.JsonConverter.Serialize(new { Result = 1, Msg = "获取数据失败", Data = classification });                         }                     }                     else                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 1, Msg = "获取数据失败,无法找到id为:" + id + "的数据", });                     }                   }             }             catch (Exception ex)             {                 return SqlSugar.JsonConverter.Serialize(new { Result = 0, Msg = "获取数据失败,原因为:" + ex.Message });             }         }         /// <summary>         /// 新增分类 http://192.168.2.177:1222/api/classification/Postclassification         /// </summary>         /// <param name="classification"></param>         [Route("api/classification/Postclassification")]         [HttpPost]         public string Postclassification(tb_classification classification)         {             try             {                 classification.createtime = DateTime.Parse(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));                 using (var db = SugarDao.GetInstance())                 {                     object result = db.Insert<tb_classification>(classification);                     if (Convert.ToInt64(result) > 0)                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 1, Msg = "添加成功" });                     }                     else                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 0, Msg = "添加失败" });                     }                 }             }             catch (Exception ex)             {                   return SqlSugar.JsonConverter.Serialize(new { Result = 0, Msg = "添加失败,原因为:" + ex.Message });             }         }         /// <summary>         /// 修改分类         /// </summary>         /// <param name="id"></param>         /// <param name="value"></param>         [Route("api/classification/Putclassification")]         [HttpPost]         public string Putclassification(tb_classification classification)         {             try             {                 classification.createtime = DateTime.Parse(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));                 using (var db = SugarDao.GetInstance())                 {                     bool result = db.Update<tb_classification>(classification, it => it.id == classification.id);                     if (result == true)                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 1, Msg = "更新成功" });                     }                     else                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 0, Msg = "更新失败" });                     }                 }             }             catch (Exception ex)             {                 return SqlSugar.JsonConverter.Serialize(new { Result = 0, Msg = "更新失败,原因为:" + ex.Message });             }         }         /// <summary>         /// 删除 http://192.168.2.177:1222/api/classification/Deleteclassification?ids=4,5         /// </summary>         /// <param name="id"></param>         /// <returns></returns>         [Route("api/classification/Deleteclassification")]         [HttpGet, HttpPost]         public string Deleteclassification(string ids)         {             try             {                 string[] input = ids.Split(',');                 int[] output = Array.ConvertAll<string, int>(input, delegate (string s) { return int.Parse(s); });                   using (var db = SugarDao.GetInstance())                 {                     bool result = db.Delete<tb_classification, int>(output);                     if (result == true)                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 1, Msg = "删除成功" });                     }                     else                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 0, Msg = "删除失败" });                     }                 }             }             catch (Exception ex)             {                 return SqlSugar.JsonConverter.Serialize(new { Result = 0, Msg = "删除失败,原因为:" + ex.Message });             }         }           /// <summary>         /// 更新状态 http://192.168.2.177:1222/api/classification/UpdateStatus?status=0&ids=2,7         /// </summary>         /// <param name="status">状态：0:下线 1：上线  -1：失效 </param>         /// <param name="ids"></param>         /// <returns></returns>         [Route("api/classification/UpdateStatus")]         [HttpGet]         public string UpdateStatus(int status, string ids)         {             try             {                 string[] input = ids.Split(',');                 int[] output = Array.ConvertAll<string, int>(input, delegate (string s) { return int.Parse(s); });                 using (var db = SugarDao.GetInstance())                 {                     bool result = db.Update<tb_classification, int>(new { status = status }, output);                     if (result == true)                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 1, Msg = "状态更改成功" });                     }                     else                     {                         return SqlSugar.JsonConverter.Serialize(new { Result = 0, Msg = "状态更改失败" });                     }                 }             }             catch (Exception ex)             {                 return SqlSugar.JsonConverter.Serialize(new { Result = 0, Msg = "状态更改失败,原因为:" + ex.Message });             }         }           string result = string.Empty;         string ChildResult = string.Empty;         string temp = string.Empty;         /// <summary>         /// 分类树形结构  http://192.168.2.177:1222/api/classification/GetclassificationTree         /// </summary>         /// <returns></returns>         [Route("api/classification/GetclassificationTree")]         [HttpGet]         public string GetclassificationTree()         {                        WebApplication.Controllers.TreeMethod tm = new TreeMethod();               // 找到所有的父节点              List<TreeEntity> treeList1 = tm.findAllParents();               if (treeList1 != null)             {                                  for (int i = 0; i < treeList1.Count; i++)                 {                                          TreeEntity tree = treeList1[i];                     // 拼接父节点                      //result += "|--" + tree.name;                     result += "{id:"+tree.id+ ",pId:"+tree.pid+",name:'"+tree.name+"'},";                     // 绑定孩子                      ChildResult = tm.BindChildByParent(tree.id, "").TrimEnd(',');                     temp = result + ChildResult;                 }                              }             else             {                 temp += "没有数据！";             }             result = "["+ temp.TrimEnd(',')+ "]";             return SqlSugar.JsonConverter.Serialize(new { Result = 1, Msg = "获取数据成功",Data= temp });         }     }     public class TreeEntity     {         public string id { get; set; }         public string name { get; set; }         public string pid { get; set; }     }     internal class TreeMethod     {         /// <summary>         /// 找到所有的父节点         /// </summary>         /// <returns></returns>         public List<TreeEntity> findAllParents()         {             List<TreeEntity> treeList = new List<TreeEntity>();               using (var db = SugarDao.GetInstance())             {                 var list = db.Queryable<tb_classification>().Where(it => it.pid == 0 && it.status==1).ToList();                 if (list.Count > 0)                 {                     for (int i = 0; i < list.Count; i++)                     {                         TreeEntity myTree = new TreeEntity();                         myTree.id = list[i].id.ToString();                         myTree.name = list[i].title;                         myTree.pid = list[i].pid.ToString();                         treeList.Add(myTree);                     }                 }             }             return treeList;         }           /// <summary>         /// 根据父节点找到所有的子节点         /// </summary>         /// <param name="pid"></param>         /// <returns></returns>         public List<TreeEntity> findChildByPid(string pid)         {             int p_id = Convert.ToInt32(pid);             List<TreeEntity> treeList = new List<TreeEntity>();               using (var db = SugarDao.GetInstance())             {                 var list = db.Queryable<tb_classification>().Where(it => it.pid == p_id&&it.status==1).ToList();                 if (list.Count > 0)                 {                     for (int i = 0; i < list.Count; i++)                     {                         TreeEntity myTree = new TreeEntity();                         myTree.id = list[i].id.ToString();                         myTree.name = list[i].title;                         myTree.pid = list[i].pid.ToString();                         treeList.Add(myTree);                     }                 }             }             return treeList;         }         /// <summary>         /// 查看是否存在子节点         /// </summary>         /// <param name="pid"></param>         /// <returns></returns>         public bool HasChild(string pid)         {             int p_id = Convert.ToInt32(pid);             int count = 0;             bool flag = false;             using (var db = SugarDao.GetInstance())             {                 var list = db.Queryable<tb_classification>().Where(it => it.pid == p_id&it.status==1).ToList();                   for (int i = 0; i < list.Count; i++)                 {                     count++;                 }                 if (count > 0)                 {                     flag = true;                 }             }             return flag;         }         string Tree = string.Empty;         /// <summary>         /// 使用递归拼接父节点的子节点         /// </summary>         /// <param name="pid"></param>         /// <param name="prefix"></param>         public string BindChildByParent(string pid, string prefix)         {                          if (this.HasChild(pid))             {                 // 得到当前父节点下的所有孩子                  List<TreeEntity> list = this.findChildByPid(pid);                 // 循环拼接当前父节点下的孩子                  for (int i = 0; i < list.Count; i++)                 {                     //Tree += "|----" + prefix + list[i].name;                     Tree += "{id:" + list[i].id + ",pId:" + list[i].pid + ",name:'" + list[i].name + "'},";                     if (this.HasChild(list[i].id))                     {                         this.BindChildByParent(list[i].id, "--");                     }                 }             }             return Tree;         }     } }   js调用： <div class="jumbotron">     <h1>ASP.NET</h1>     <p class="lead">ASP.NET is a free web framework for building great Web sites and Web applications using HTML, CSS, and JavaScript.</p>     <p><a href="http://asp.net" class="btn btn-primary btn-lg">Learn more »</a></p> </div> <div class="row">     <div class="col-md-4">         <h2>Getting started</h2>         <p>ASP.NET Web API is a framework that makes it easy to build HTTP services that reach         a broad range of clients, including browsers and mobile devices. ASP.NET Web API         is an ideal platform for building RESTful applications on the .NET Framework.</p>         <p><a class="btn btn-default" href="http://go.microsoft.com/fwlink/?LinkId=301870">Learn more »</a></p>     </div>     <div class="col-md-4">         <h2>Get more libraries</h2>         <p>NuGet is a free Visual Studio extension that makes it easy to add, remove, and update libraries and tools in Visual Studio projects.</p>         <p><a class="btn btn-default" href="http://go.microsoft.com/fwlink/?LinkId=301871">Learn more »</a></p>     </div>     <div class="col-md-4">         <h2>Web Hosting</h2>         <p>You can easily find a web hosting company that offers the right mix of features and price for your applications.</p>         <p><a class="btn btn-default" href="http://go.microsoft.com/fwlink/?LinkId=301872">Learn more »</a></p>     </div> </div> <script src="~/Scripts/jquery-1.10.2.js"></script> <script>     $(function () {            //var json = "{\"pid\": 0, \"title\": \"123\", \"introduction\":\"321\"}";         //var jsonjson = JSON.parse(json);         //$.ajax({         //    type: "post",         //    dataType: "json",         //    url: " http://192.168.2.177:1222/api/classification/Postclassification",         //    data:{"str":"jsonjson"},         //    success: function (data) {         //        console.log(data);         //    }         //});     });     function OK() {         $.ajax({             type: "post",             url: "http://192.168.2.177:1222/api/classification/Postclassification",             data: { pid: 1, title: '123哈哈1', introduction:'介绍1'},             success: function (data) {                 console.log(data);             }         });     }     function update() {         $.ajax({             type: "post",             url: "http://192.168.2.177:1222/api/classification/Putclassification",             data: { id: 11, pid: 1, title: '更新一下', introduction: '更新一下介绍吧' },             success: function (data) {                 console.log(data);                             }           });     } </script>         <div>         <h1>新增操作</h1>         pid:<input type="text"  id="txtPid"/><br />         title:<input type="text" id="txtTitle" /><br />         introduction:<input type="text" id="txtintroduction" /><br />         <input type="button" value="提交" onclick="OK()" />     </div>              <div>     <h1>修改操作</h1>     pid:<input type="text" id="txtPid" /><br />     title:<input type="text" id="txtTitle" /><br />     introduction:<input type="text" id="txtintroduction" /><br />     <input type="button" value="提交" onclick="update()" /> </div>